Replacing the valves – Labconco VACUUBRAND Diaphragm Pump 7393000 User Manual
Page 60
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Assemble the original number of washers
(D) between diaphragm support disc (E) and
connecting rod (B).
➨
Screw diaphragm clamping disc (G), dia-
phragm (F), diaphragm support disc (E), and
washers (D) to connecting rod (B).
➨
Optimum torque for the diaphragm support disc: 4.4 ft
.
lb
f
(6 Nm), it is
recommended to use a torque wrench. Attach torque wrench to dia-
phragm key (hexagonal bolt 6 mm wide).
Note: Never use the diaphragm key with any additional tools like tongs
or Allen keys without appropriate torque limitation.
Loosen the clamping brackets (S) on the valve
heads (O).
➨
Unscrew at each clamping bracket the two
countersunk screws with a Torx driver T20.
Remove the clamping brackets.
Loosen connection fastener slightly.
➨
Turn the fillister head screw (L) with a Torx
driver T20 at most one turn.
+
Do not detach the fillister head screw from
the square nut (K).
➨
Open the hinged cover of the connection
fastener (Q) with a slotted screwdriver.
Replacing the valves
F
G
Q
O
S